JP2001520214A5 - - Google Patents
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- Publication number
- JP2001520214A5 JP2001520214A5 JP2000516939A JP2000516939A JP2001520214A5 JP 2001520214 A5 JP2001520214 A5 JP 2001520214A5 JP 2000516939 A JP2000516939 A JP 2000516939A JP 2000516939 A JP2000516939 A JP 2000516939A JP 2001520214 A5 JP2001520214 A5 JP 2001520214A5
- Authority
- JP
- Japan
- Prior art keywords
- plant components
- meth
- alkali metal
- metal hydroxide
- hydroxide solution
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 150000008044 alkali metal hydroxides Chemical class 0.000 description 5
- 238000004140 cleaning Methods 0.000 description 5
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000004821 distillation Methods 0.000 description 3
- 238000011010 flushing procedure Methods 0.000 description 3
- 150000001252 acrylic acid derivatives Chemical class 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 150000001298 alcohols Chemical class 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-M acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- -1 acrylate ester Chemical class 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Description
【特許請求の範囲】
【請求項１】 （メト）アクリル酸エステルの製造または処理に使用されるプラント構成部材を清浄化するための方法において、
（ａ）プラント構成部材を空にし、
（ｂ）プラント構成部材を５〜５０質量％のアルカリ金属水酸化物水溶液でフラッシングし、
（ｃ）プラント構成部材からアルカリ金属水酸化物溶液を除去し、
（ｄ）必要に応じて、プラント構成部材を水で洗浄し、かつ、
（ｅ）必要に応じて、プラント構成部材を乾燥させることを特徴とする、プラント構成部材を清浄化するための方法。
【請求項２】 フラッシング中のアルカリ金属水酸化物溶液の温度が２０〜１４０℃である、請求項１に記載の方法。
【請求項３】 ユニットを形成するために接続されてもよいプラント構成部材が反応器、蒸留カラム、抽出装置、熱交換器、エバポレーター、凝縮器、管またはポンプである、請求項１または２に記載の方法。
【請求項４】 接続されたプラント構成部材を含むユニットが、エバポレーターとカラム上部との間のフラッシング管路を有する蒸留ユニットである、請求項３に記載の方法。
【請求項５】 プラント構成部材を、（メト）アクリル酸とアルコールまたはオレフィンとの反応によるか、あるいは（メト）アクリル酸エステルとアルコールとの反応による（メト）アクリル酸エステルの製造に使用する、請求項１から４までのいずれか１項に記載の方法。
【請求項６】 プラント構成部材を（メト）アクリル酸エステルの製造または処理中に形成される沈積したポリマーを除去するために清浄化する、請求項１から５までのいずれか１項に記載の方法。
【請求項７】 工程（ｃ）の後のアルカリ金属水酸化物溶液中に含まれるアルコールを、相分離、蒸留またはストリッピングによって前記溶液から分離し、必要に応じて（メト）アクリル酸エステルを製造するためのエステル化に再利用する、請求項６に記載の方法。
【請求項８】 アルカリ金属水酸化物溶液を清浄化の後に補集し、かつ清浄化のために数回に亘って使用する、請求項１から７までのいずれか１項に記載の方法。
[Claims]
1. A method for cleaning plant components used in the production or treatment of (meth) acrylic esters, comprising:
(A) emptying the plant components,
(B) flushing the plant components with a 5 to 50% by mass aqueous alkali metal hydroxide solution;
(C) removing the alkali metal hydroxide solution from the plant components;
(D) washing the plant components with water, if necessary, and
(E) A method for cleaning plant components, comprising drying the plant components as required.
2. The method according to claim 1, wherein the temperature of the alkali metal hydroxide solution during the flushing is between 20 and 140 ° C.
3. The method according to claim 1, wherein the plant components which may be connected to form a unit are a reactor, a distillation column, an extractor, a heat exchanger, an evaporator, a condenser, a tube or a pump. The described method.
4. The method according to claim 3, wherein the unit comprising the connected plant components is a distillation unit having a flushing line between the evaporator and the top of the column.
5. Use of the plant components for the production of (meth) acrylates by reaction of (meth) acrylic acid with alcohols or olefins or by reaction of (meth) acrylates with alcohols. A method according to any one of claims 1 to 4.
6. The process according to claim 1, wherein the plant components are cleaned to remove deposited polymer formed during the production or treatment of the (meth) acrylate. Method.
7. The alcohol contained in the alkali metal hydroxide solution after step (c) is separated from said solution by phase separation, distillation or stripping and, if necessary, the (meth) acrylate ester The method according to claim 6, which is reused for esterification for production.
8. The process as claimed in claim 1, wherein the alkali metal hydroxide solution is collected after cleaning and is used several times for cleaning.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19746688.5 | 1997-10-22 | ||
| DE19746688A DE19746688A1 (en) | 1997-10-22 | 1997-10-22 | Method for cleaning parts of plant used for producing and processing (meth)acrylic esters |
| PCT/EP1998/006677 WO1999020595A1 (en) | 1997-10-22 | 1998-10-21 | Method for cleaning system components |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| JP2001520214A JP2001520214A (en) | 2001-10-30 |
| JP2001520214A5 true JP2001520214A5 (en) | 2006-01-05 |
| JP4248140B2 JP4248140B2 (en) | 2009-04-02 |
Family
ID=7846302
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP2000516939A Expired - Lifetime JP4248140B2 (en) | 1997-10-22 | 1998-10-21 | Method for cleaning plant components |
Country Status (14)
| Country | Link |
|---|---|
| US (1) | US6568406B2 (en) |
| EP (1) | EP1042271B1 (en) |
| JP (1) | JP4248140B2 (en) |
| KR (1) | KR100579677B1 (en) |
| CN (1) | CN1113848C (en) |
| AU (1) | AU1230899A (en) |
| BR (1) | BR9813106A (en) |
| CZ (1) | CZ297843B6 (en) |
| DE (2) | DE19746688A1 (en) |
| ID (1) | ID23871A (en) |
| MX (1) | MX217992B (en) |
| MY (1) | MY120165A (en) |
| TW (1) | TW553779B (en) |
| WO (1) | WO1999020595A1 (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| MY119701A (en) | 1999-03-02 | 2005-06-30 | Nippon Catalytic Chem Ind | Method for production of (meth) acrylic acid and/or (meth) acrylic esters |
| DE10007213A1 (en) * | 2000-02-17 | 2001-08-23 | Basf Ag | Process for the preparation of esters of alpha, beta-unsaturated carboxylic acids |
| JP2002234861A (en) * | 2001-02-09 | 2002-08-23 | Nippon Shokubai Co Ltd | Method for producing hydroxyalkyl ester |
| DE10211273A1 (en) | 2002-03-13 | 2003-03-06 | Basf Ag | Cleaning a plate-type column that has been used to rectify (meth)acrylic acid and/or (meth)acrylate esters by passing a basic liquid downwards through the column comprises passing a gas upwards through the column |
| DE10219544A1 (en) * | 2002-05-02 | 2003-11-20 | Ecolab Gmbh & Co Ohg | Removal of polymer production residues |
| DE10237061A1 (en) * | 2002-08-09 | 2004-02-19 | Basf Ag | Process for cleaning apparatus in which organic solvents containing (meth) acrylic acid have been treated and / or produced |
| JP3971974B2 (en) * | 2002-09-03 | 2007-09-05 | 三菱化学株式会社 | Method for producing (meth) acrylic acids |
| US20040104108A1 (en) | 2002-12-03 | 2004-06-03 | Mason Robert Michael | High capacity purification of thermally unstable compounds |
| DE10347664A1 (en) | 2003-10-09 | 2004-12-02 | Basf Ag | Separation of acrylic acid from liquid mixture, for use as monomer, by rectification in column in presence of diacrylic acid as polymerization inhibitor in upper part of column |
| KR100635284B1 (en) * | 2004-05-18 | 2006-10-17 | 주식회사 엘지화학 | Plant parts cleaning solution for the processing of methacrylic acid and/or methacrylic esters, and cleaning method using said cleaning solution |
| CN103769400B (en) * | 2014-01-28 | 2015-12-09 | 福建锦江科技有限公司 | A kind of method of cleaning nylon 6/poly conjunction recovery system packed tower |
| DE102014108273A1 (en) | 2014-06-12 | 2015-12-17 | Basf Se | Process and system for separating two-phase liquid mixtures |
| CN109622535A (en) * | 2018-12-29 | 2019-04-16 | 山东罗欣药业集团股份有限公司 | A kind of method of rapid cleaning rectifying column |
| EP4077213A1 (en) * | 2019-12-18 | 2022-10-26 | Covestro Intellectual Property GmbH & Co. KG | Method of cleaning an apparatus used in the concentration of a mineral acid |
Family Cites Families (19)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3865628A (en) * | 1973-02-26 | 1975-02-11 | Cesco Inc | Removal of polymer residue from surfaces of processing equipment |
| US4209343A (en) * | 1977-04-15 | 1980-06-24 | Hobart Corporation | Method for air transport of sanitizing liquid to a warewasher |
| IN158315B (en) * | 1981-06-19 | 1986-10-18 | Mitsui Toatsu Chemicals | |
| DE3137340A1 (en) * | 1981-09-19 | 1983-04-07 | Henkel KGaA, 4000 Düsseldorf | METHOD FOR REGENERATING AQUEOUS DEGREASING AND CLEANING SOLUTIONS |
| NO841249L (en) * | 1983-04-04 | 1984-10-05 | Shinetsu Chemical Co | PROCEDURE FOR REMOVING FOLDED POLYMER SHELL ON REACTOR WALLS AND MEASURES FOR IMPLEMENTING THE PROCEDURE |
| DE3325166C2 (en) * | 1983-07-12 | 1986-05-22 | Wacker-Chemie GmbH, 8000 München | Use of a cleaning agent to remove polymer coatings from containers |
| JPS61192748A (en) * | 1985-02-22 | 1986-08-27 | Asahi Chem Ind Co Ltd | Method for washing polymer containing unsaturated bond in molecule |
| US4664836A (en) * | 1985-09-18 | 1987-05-12 | Amway Corporation | Drain cleaner |
| US4904309A (en) * | 1986-06-06 | 1990-02-27 | Kanegafuchi Chemical Industry Co., Ltd. | Chemical cleaning method of the interior of polymerization reactor |
| US4935065A (en) * | 1986-08-22 | 1990-06-19 | Ecolab Inc. | Phosphate-free alkaline detergent for cleaning-in-place of food processing equipment |
| DE3821349A1 (en) * | 1987-08-14 | 1989-02-23 | Linde Ag | METHOD FOR CLEANING OR REGENERATING A FILLED BODY COLON |
| US5688336A (en) * | 1988-05-03 | 1997-11-18 | Millard, Jr.; James B. | Method for removal of water soluble polymers |
| CA1339182C (en) * | 1988-09-07 | 1997-07-29 | Takashi Hayashi | Process for producing cycloolefin random copolymers |
| DE3838188A1 (en) * | 1988-11-10 | 1990-05-17 | Fourne Maschinenbau Gmbh | CLEANING POLYMER-TAPED PARTS |
| JP2892213B2 (en) * | 1992-03-31 | 1999-05-17 | ホーヤ株式会社 | Polyurethane remover |
| JPH0663590A (en) * | 1992-06-29 | 1994-03-08 | Japan Synthetic Rubber Co Ltd | Scale remover and scale removing method using the same |
| JPH06100893A (en) * | 1992-09-18 | 1994-04-12 | Asahi Chem Ind Co Ltd | Method for cleaning polymerization apparatus |
| US5487836A (en) * | 1993-06-23 | 1996-01-30 | Basf Corporation | Method of cleaning a sintered powdered metal filter |
| DE19851983A1 (en) * | 1998-11-11 | 2000-05-18 | Basf Ag | Process for the continuous production of alkyl esters of (meth) acrylic acid |
-
1997
- 1997-10-22 DE DE19746688A patent/DE19746688A1/en not_active Withdrawn
-
1998
- 1998-10-21 DE DE59807142T patent/DE59807142D1/en not_active Expired - Lifetime
- 1998-10-21 WO PCT/EP1998/006677 patent/WO1999020595A1/en active IP Right Grant
- 1998-10-21 BR BR9813106-0A patent/BR9813106A/en not_active Application Discontinuation
- 1998-10-21 TW TW087117390A patent/TW553779B/en not_active IP Right Cessation
- 1998-10-21 CZ CZ20001458A patent/CZ297843B6/en not_active IP Right Cessation
- 1998-10-21 CN CN98809880A patent/CN1113848C/en not_active Expired - Lifetime
- 1998-10-21 EP EP98955504A patent/EP1042271B1/en not_active Expired - Lifetime
- 1998-10-21 ID IDW20000704A patent/ID23871A/en unknown
- 1998-10-21 US US09/509,817 patent/US6568406B2/en not_active Expired - Lifetime
- 1998-10-21 KR KR20007004280A patent/KR100579677B1/en not_active IP Right Cessation
- 1998-10-21 JP JP2000516939A patent/JP4248140B2/en not_active Expired - Lifetime
- 1998-10-21 AU AU12308/99A patent/AU1230899A/en not_active Abandoned
- 1998-10-22 MY MYPI98004822A patent/MY120165A/en unknown
-
2000
- 2000-03-03 MX MXPA00002230 patent/MX217992B/en unknown
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